UFC 155

UFC 155: dos Santos vs. Velasquez 2
A poster or logo for UFC 155: dos Santos vs. Velasquez 2.
Information
Promotion	Ultimate Fighting Championship
Date	December 29, 2012
Venue	MGM Grand Garden Arena
City	Las Vegas, Nevada
Attendance	13,561
Total gate	$3,286,025
Buyrate	590,000
Event chronology
The Ultimate Fighter: Team Carwin vs. Team Nelson Finale UFC 155: dos Santos vs. Velasquez 2 UFC on FX: Belfort vs. Bisping

UFC 155: dos Santos vs. Velasquez 2 was a mixed martial arts event held by the Ultimate Fighting Championship on December 29, 2012 at the MGM Grand Garden Arena in Las Vegas, Nevada.

A Junior dos Santos vs. Cain Velasquez rematch has been expected since May 26, 2012 at UFC 146, where dos Santos defended his Heavyweight championship against Frank Mir and Velasquez defeated Antônio Silva. Velasquez and dos Santos had already fought once on November 12, 2011 at UFC on Fox: Velasquez vs. Dos Santos, where dos Santos won via knockout in the first round. Alistair Overeem, former DREAM and Strikeforce champion, is expected to face the winner of this bout. He was originally expected to face dos Santos for the title at UFC 146; however, on April 4, 2012, Overeem was revealed to have failed his pre-fight drug test by the Nevada State Athletic Commission (NSAC). He was found to have an elevated testosterone to epitestosterone ratio of 14-to-1, over the allowed ratio rate of 6-to-1.

Chael Sonnen was expected to face Forrest Griffin at this event. However, Sonnen was pulled from the fight to coach the seventeenth season of The Ultimate Fighter opposite UFC Light Heavyweight champion Jon Jones and was replaced by Phil Davis. Griffin was then forced out of the bout with a knee injury and Davis was pulled from the card altogether.